Using Mach Reflection Effect in Synthesis of Ultrafine Diamond by Detonation Wave Method

This paper proposes a method to use Mach effect in explosive detonation to enhance the yield of ultrafine diamond. The detonation parameters on Mach rod were computed by Whitham method. The cylindrical charge in experiment was TNT wrapped with TNT/RDX (30/70) charges. Ultrafine diamond can be obtained from the soot of detonation product in a nitrogen-filled chamber, the yield is 6%; if this charge is wrapped with salt, the yield can be more than 10%.